{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "A\n",
      "B\n",
      "C\n"
     ]
    }
   ],
   "source": [
    "from collections import OrderedDict\n",
    "quotes= OrderedDict([\n",
    "    ('A',111),\n",
    "    ('B',222),\n",
    "    ('C',333),\n",
    "])\n",
    "\n",
    "for i in quotes:\n",
    "    print(i)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "def palindrome(word):\n",
    "    from collections import deque\n",
    "    dq=deque(word)\n",
    "    while len(dq) >1:\n",
    "        if dq.popleft()!=dq.pop():\n",
    "            return False\n",
    "        return True\n",
    "palindrome('aba')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "base",
   "language": "python",
   "name": "python3"
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  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.8.8"
  }
 },
 "nbformat": 4,
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